package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class LoginDemo {
    public static void main(String[] args) {
        Scanner sacn=new Scanner(System.in);
        System.out.println("请输入用户名");
        String username=sacn.nextLine();
        System.out.println("请输入密码");
        String password=sacn.nextLine();
        try(Connection connection = DBUtil.getConnecting()){
            Statement statement=connection.createStatement();
            String sql="SELECT id,username,password,nickname,age " +
                    "FROM user1 " +
                    "WHERE username='"+username+"' AND password='"+password+"' ";
            ResultSet rs= statement.executeQuery(sql);
            if  (rs.next()) {

                System.out.println("登录成功");

            }else {
                System.out.println("登录失败");
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
